Duo Zhang created HBASE-20144:

             Summary: The shutdown of master will hang if there are no live 
region server
                 Key: HBASE-20144
                 URL: https://issues.apache.org/jira/browse/HBASE-20144
             Project: HBase
          Issue Type: Bug
            Reporter: Duo Zhang

In a graceful shutdown, we will set cluster down in ServerManager, and in 
ServerManger.expireServer, if the cluster down flag is true and all rses are 
gone, we will call master.stop and quit.

But if we have no live rs when shutting down, then expireServer will never be 
triggered, so we are dead...

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